It sets up a mathematical models for the calculation of hydraulic transients on the basis of the boundary conditions of air valves,and carry out a numerical simulation for a water supply project,at last,this paper analysis the influences of different air valves flow features on the water hammer characteristics of pump systems.
针对(空)气阀结构特征,建立其进排气边界条件,结合工程实例,重点研究了(空)气阀流量系数对管道内压力波动的影响。
Study on air admission and exhaust characteristics of air valve in long water supply system;
长距离输水工程中(空)气阀的进排气特性研究
Research on characteristics of protection against water hammer of air valve in long water supply systems;
长管道泵系统中(空)气阀的水锤防护特性模拟
Making a reasonable selection of air valves will have a great impact on the safety operation of project.
(空)气阀已成为长距离输水系统中必不可少的设备,担负着管道充水排气,事故、正常停机进气及排气,水锤防护等多项任务。
The butterfly valve closing procedure of water transfer work from Fengjiashan Reservoir to Baoji city is optimized for water hammer protection,and the concept of air valve set is proposed.
提出了(空)气阀组概念,水锤分析表明,采用(空)气阀组和两阶段关闭蝶阀联合作用可有效地防护长距离加压输水工程中水锤危害。